Discoloured leaves with black spots, anyone know what this is and how to treat it?

[Highs and lows]

My Green gelato autoflower plant is now 7 weeks old and last week started to form discoloured lower leaves with black spots so I cut them off but it has now grown on to the big fan leaves and I can’t risk over defoliating, what shall I do? Please look at pictures attached and give advice , many thanks (Also im not sure because this is my first grow and she looks quite young for 7 weeks old ??)

 

[ChemByrne]

Looks like a calcium deficiency to me. Do you supplement cal/mag?
Also, even if your leaves have spots or discolouration, I wouldn't be removing them just because of this, let the plant leech what it needs from that leaf or it will go on and defile another new leaf.

 

[bobrown14]

Small container = small plants.

Bigger roots = bigger shoots

Looks like over watering or beginings of root bound. Don't "defoil" - thats not any type of horticultural practice.

 

[AdaminCO]

Are you in coco? If so it’s very dry looking.
What’s your medium, nutrient, feed schedule, and pH?

 

[AdaminCO]

Looks hungry... it just started to flower so it’s wanting more P and K. Switch to bloom nutes.

The pot does seem small, but being an auto, I hear they are less tolerant towards transplants.

 

[Highs and lows]

Thanks everyone for your advice I shall use it. Should I consider reporting into a larger pot ?

 

[Highs and lows]

Are you in coco? If so it’s very dry looking.
What’s your medium, nutrient, feed schedule, and pH?

Hi thanks for your reply I use Soil and coco , I do feed,water,water, feed with 2ml of micro, grow and bloom. I have not measured ph but my tap water is around 7.

 

[Highs and lows]

Small container = small plants.

Bigger roots = bigger shoots

Looks like over watering or beginings of root bound. Don't "defoil" - thats not any type of horticultural practice.

Thanks for your reply, should I re pot into a bigger pot ?

 

[Highs and lows]

Looks like a calcium deficiency to me. Do you supplement cal/mag?
Also, even if your leaves have spots or discolouration, I wouldn't be removing them just because of this, let the plant leech what it needs from that leaf or it will go on and defile another new leaf.

Thanks for your reply, I was told not to use cal mag as there is already calcium in the soil I’m using

 

[ChemByrne]

Well you you have a calcium deficiency, it's easily "spotted" excuse the pun, and it will halve your yields and leave you with a very weak,hollow stemmed plant if left untreated.
There is calcium in the soil, but it's a small pot so its either all used up or worse, locked out.